Average annual temperature is 20.9 °C
Absolute maximum temperature: 39.3 °C
Absolute minimum temperature: 5.6 °C
Number of sunny days: 265 days
Number of rainy days: 100 days
Look at detailed online map of Chicago
* Weather data for Chicago Mexico is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 27.4 | 32.1 | 33.1 | 34.4 | 35.7 | 39.3 | 36.3 | 35.2 | 35.0 | 31.9 | 31.8 | 26.0 |
| Average daytime temperature (°C) | 25.0 | 27.2 | 30.3 | 31.6 | 32.8 | 36.0 | 31.6 | 31.5 | 32.5 | 28.4 | 27.1 | 23.7 |
| Average temperature (°C) | 16.3 | 18.0 | 20.1 | 21.8 | 23.5 | 25.6 | 23.5 | 23.2 | 23.8 | 20.8 | 18.7 | 15.9 |
| Average night temperature (°C) | 9.0 | 10.4 | 11.8 | 13.1 | 15.2 | 17.3 | 17.8 | 17.6 | 18.0 | 15.6 | 13.2 | 10.4 |
| Absolute minimum temperature (°C) | 6.5 | 8.3 | 8.1 | 9.4 | 12.4 | 14.8 | 15.5 | 15.5 | 16.2 | 11.9 | 7.6 | 5.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.9 | 11.4 | 12.0 | 12.7 | 13.2 | 13.5 | 13.3 | 12.9 | 12.3 | 11.6 | 11.1 | 10.8 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.8 | 10.5 | 11.2 | 11.7 | 11.8 | 12.1 | 10.9 | 10.4 | 11.1 | 9.2 | 9.7 | 8.4 |
| Precipitation (mm) | 3 | 0 | 0 | 0 | 1 | 4 | 67 | 75 | 24 | 79 | 20 | 5 |
| Sunny days | 26 | 28 | 31 | 29 | 30 | 27 | 8 | 8 | 16 | 12 | 22 | 28 |
| Rainy days | 5 | 0 | 0 | 1 | 1 | 3 | 23 | 23 | 14 | 19 | 8 | 3 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Chicago is at